Bobbin-retaining device for sewing-machine loop takers



Feb. 10, 1931. w, PARKEs 1,792,238

BOBBIN RETAINING DEVICE FOR SEWING MACHINE LOOP TAKERS Filed Jan. 15, 1929 gwwwtoz William Mparkes 'W%WM&L%)D W? K W Patented Feb. 10, 1931' l UNITED; STATE A NT OF C -r NELSON PARK-ES, F- BRDQKLYN, ew $503K, A SIGHQR T0 w -n smonn I CTURING" GQMPANY; QF NEW IERSEY a a ssm eawetluue eEw E 7 SEWING-MAQEINE m meme Ap i eeei l d ames; '5 1 2. Se ia NO- new.

7 tion, the present improved"bobbindatching device has been applied to a sewing machine loop-taker of the velrtical axistypeg in which 'theEbobbin-carrier isprovidedwith ,a peripheral bearing-ribjournaled in a loop-taker raceway. The bobbin-carrier isopen at its top and has at it's/bottom a narrow flange projecting inwardly from'the side wall of the carrier, upon which flange the bobbin-1ssupported. Upo'nits upper rim, the bObbllb carrier is provided with shoulders engageable with stationary stop-elements to limit move-iment of the carrierto slight oscillations about the loop-taker axis. 1 a

Attached to the outer wall of'the bobbinmember having diverging apertured' ears throughwhich are passed its securing screws.

* Extendingupwardlyfrom between said ears is- -a spring tong-ue,"which passes through a slot in the wall of the bobbin-carrier-ad a- 2 ime its bearing-rib and into a clearance re.- 'eess'in the inner wallof the bObblIl-Calrlfll';

The tongue terminates at its free end in a 'flectedtowardthe outer side 0f the bobbinrecess in the bobbincarrier permitting this movement of the lip.

a top-planvi'ew ofa portion-of a. sewing machine cloth-plate, with the slide-plates removed to expose the loop-taker containing the present improvement. Fig, 2 is a sec- Q tional view substantiallyyon the1ine 2 2,' "Fig-'1.- -Fig. 3-is a view'imfsi'de elevation of carrier,;b'elowits'hearing rib, isa retainer! lip overhanging the outer edge of the upper, bobbin-flange, said lip beingpreferably pro "'tected' against snagging the .need-le thr'ead loop by a .fla-nge upon the upper'edgeof the" bobbin-carrier Thisglip is'shapedto be jde-- carrier by the act "ot insertin orremoving" t ab'obbin, the spring-tongue an e the clearance the bobbin-carrier on the bobbin-latch side thereof, Fig. 4 is a perspective view'of: the bobbin-carrier P QE N W JERSEY; A OR A ION O Certain" features of this 1 loop-taker mechanism'are shown more? in detail in an application filed January 15, 1929, with Serial No. 3325610.

Referring'to the drawings, the'present improvement is shown as embodied in a sewing machine having a cloth-plate 1, upon which is secured a throat-plate 2 by means of screws, as The throat-platefis-proe vided' with the usual=needle aperture4' and with parallel slots, as. 5 ,"throughwhich slots thefeed-dog 6, of the lower-'four-gmotion type is projected to intermittently advanc efthe' work, 7 Disposed directly below the plane'of the under side of the throat-plate'is] a loop-taker of the vertical-axis type, comprising. an outer body 7 separably secured upon an inner body their upper rims "with inwardly directed fi 'anges9 and 10 suitably spaced to form a' raceway for a'bearing-rib ll up'o'n the outer periphery of a. bobbin-carrier '12, which is therefore *j ouinaledfin the loop-taker; The outer body 7' of the loop-taker is provided with a beak 13 'for seizingthe needle thread 1 loop and with an oppositely directed heel or spur 1d upon which the needle-thread loop is discharged by the beak 1 3 and, bywhich said loop is held until just before the setting, of the Stitch. l

'70 "8. The loop-takerkbodies are provided at The bobbin-carrier 12 is open at-itstop and I is substantiallybottomless its base compris ing anarrow internal flange 15 for supporting a bobbin 16 disposed within the bobbinly' from the bobbin-carrier base is an aux-' iliary hook 17 V disposed-between the inner- 'looptaher' bod-yand the bobbin-carrier,- said -hook 17 acting to direct toward the bottomof the bobbin-carrier a limb of the needle-thread In the accompanying drawings, Fig, 1 is loops'eize d by'theloQp-t'aker, which limb is tin'uity; o The bobbin 1 6 is'latched against accidental carrier. Extending-outwardlyand upward-' upward movement out of its carrier during the s wing operation, the latching -mean.

The tongue 19 extends upwardlyfrom a base-member which at'opposite sides of the tongue is provided with apertured ears, as 21, for the reception of screws, as 22, whereby theretainer-member base is fastened upon the outer side-wall of the bobbin-carrier below its bearing-rib 11. Intermediate its -.-ends, the tongue 19 extends through a slot 7 adjacent the bearing-rib 11, while the upper 23 provided in the wall of the bobbin-carrier end of the tongue is disposed within a clearance recess 24 formed in the inner side 01" a flange 25 upon the bobbin-carrier above the bearing-rib 11. The flange 25 is preferably sufficiently. high toact as a guard'for the lip lip from snagging to thereby prevent said the needle thread loop,

The flange is disposed at the cast-01f side of the loop-taker and terminates at opposite ends in stop-shoulders 26 and 27. Adjacent to the shoulder 27, the upper edgeo-f the V- bobbin-carrier, as at 28, is disposed below 1 the upper bobbin-flange to provide for con venient access to the bobbin for-removal.

The shoulder 26 of the b bbin Ca-rrier is said bobbin-carrier against rotation with the j loop-taker. Movement of the bobbin-carrier adapted to engage a stop-lug 29 depending from-the throat-plate2, in order to restrain in the opposite direction is limited by a staengage the shoulder 27 oi? the-bobbin-carrier. The referred to stop-elements for the bobbin carrier are not herein described in detail, as lthey form the subj ect of a separate patent.

-; application filed January 15,1929, with Serial No. 332,612.

Station of the loop -taker,'by means of an .-o pener -finger 31 which is positioned to engage a shoulder 32 upon the bobbin-carrier...

. It may be mentioned that this reverse o-scilla-.

fanee'dle-thread loop-passage between the tion of-the bobbin-carrier is designed-to open .stop-shoulder 26 and the stop-lug-29, aswell as topullthread fromthe bobbin, but this -'subject-matter ,forms 'partof stilllanother patent application filed January 15,1929, ,;with Serial-No.332g6lO. x a

i It is to be understood overhangs the outer edge of the upper flange that while the ilip '20ofthebobbindatch or retainer normally.

mally not in contact with the bobbin and merely guards against excessive rising movements of the bobbin within its carrier. Thebobbin-thread is passed through a selfthreading slit 33, beneath atension-spring 342 secured upon the flange 25, and over the stop-shoulder 26 to the throat-plate needleaperture. o

Having thus setforth the nature of themvention, what I claim herein is I 1. In a sewing machineloop-taker, a bob- ,bin-carrier journaled insaid loop-taker having a bobbin cavity,"a-bobbin posltloned 1n said cavity, and means for confining the bobbin in the cavity of the bobbin-carrier comprising a retainer-member sustained by the bobbin-carrier and havinga yielding lip projecting from the bobbin-carrier wall inwardly across an outer edge of the bobbin to an extent slightly within-said outer edge.

2. In a sewing machine loop-taker, a bobbin-carrier journaled in said loop-taker,' a bobbin disposed within the bobbin-carrier, means for restraining the bobbin-carrier againstv rotation with the V loop -taker, and means for'confining said bobbin within the bobbin-carrier comprising a retainer-member secured' upon the side wall ofthe bobbincarrier and having a yielding lip overhanging-the' outer edge of the bobbin.

3. Ina-sewmg-machine loop-taker of the vertical-axis type having araceway, an opentop bobbin-carrier having aperiph'eral bearing-ribjournaledin said raceway, a bobbin '2 .disposed within the bobbin-carrier, means for restraining'the bobbin-carrier against rotation with the loop-taker, and a retainer-member secured upon the outer Wall of said bobbin-carrier below its bearing-rib, said retainer-member terminating in a yielding V overhanging the upper side of; said bobbin. tionary stop-finger 30 which is posltioned to 4. In asewing.machine loop'-taker,-a bob.- bin-carrierjournaled in saidloop-taker, a

rying fsaid lip, the bobbin-carrier having a clearance recess in :its innenwall for said I The bobbin carrier 1s osc1llated"sl1'ghtly,' .in a direction opposite to the directionoi rotongue.

v 5. -In a sewing machine loop-taker, a bob- Tb n-cafr'rier journaled in said loop-taker, a

bobbin disposed within thebobbin-cztrrier, and a retainer-member sustained by the bobb1ncarrier having a lip yieldable across the passed around .the bobbin-carrier by said loop-taker.

1 ;6. In, a sewing machine loop-taker, .a bob {bin-carrier j ournaled in said loop-taker hay-- .ing a side wall defining. abobbin-cavity, a-

bobbin disposed within. the bobbin-carrier,

=and aretainer-inember sustained the bob; bin-carrierhaving-a spring-tongue exte riding-,

through said side wall of the bobbin-carrier and terminating in a lip overhanging the outer edge of said bobbin.

7 In a sewing machine loop-taker, a bobbin-carrier journaled in said loop-taker, a.

bobbin disposed within the bobbin-carrier, and means for confining the bobbin within'its carrier, comprising a retainer-memberihaw ing spaced aperturedears secured upon the bobbin-carrier, a spring-tongue projecting from between said ears, and a lip carried by said tongue in position to overhang an edge of the bobbin.

8. In a sewing machine loop-taker of the vertical-axis type, a bobbin-carrier j ournaled in said loop-taker, a bobbin disposed within 7 the bobbin-carrier, and a retainer-member having a lip yieldable across the outer edge of i the bobbin, said bobbin-carrier having a portion of its upper rim disposed below the upper side of the bobbin and an adjacent porilsion constituting a thread-100p guard for said name to this specification.

WILLIAM NELSON PARKES.

In testimony whereof, I have signedmy 

